Detector-bar.



PATEN TED JUNE 30, 1903.-

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J. T .HAMBAY ns'rnc'ron BAR. APPLICATION FILED JUNE 24, 1902.

HO' MODEL.

Patented June 30, 1903.

PATENT OFFICE- JAMES T. HAMBAY, OF NEW YORK, N. Y.

DETECTORS-BAR.

SPECIFICATIGN forming part of Letters Patent No. 732,296, dated June 30, 1903.

I Application filed June 24, 1902. Serial No.112,975. N0 model-J To all whom it may concern:

Be it known that I, JAMES T. HAMBAY, a citizen of the United States, and a resident of New York city, State of New. York, have invented certain new and useful Improvements in Detector-Bars, of which the following is a specification.

My invention relates to new and useful improvements in detectorbars of the class adapted to enable the operator of a switch or signal to detect the presence of a train standing over or in the immediate vicinity of the switch. The objection to the apparatus now in use is that the parts are not held in such relationship to each other that they may be depended upon for continuous effective operation, the'wearing away of the pins on which the parts oscillate causing them to loosen in such way that the detector-bar will not be held rigidly against the rail and not only does not perform its office, but becomes a'decided encumbrance. Another objection is that the sand from the engine is permitted to fall into the unprotected operating parts, cutting them and thus assisting in the rapid loosening and wearing away. By my invention I have obviated these difficulties and have provided an apparatus which, while effective,is not subjected to rapid wear and will at all times hold itself in alinement and adapted to perform its office.

In the following I have described, with reference to the accompanying drawings, astructure embodying my invention, the features thereof being more particularly pointed out hereinafter in the claims.

In the drawings, Figure 1 represents an elevation of a section of rail, showing a portion of one of my detector-bars in place thereon, parts being shown in section and parts being broken away. Fig. 2 is a sectional view of the parts shown in Fig. 1 along the line A B. Fig. 3 is a sectional view of a modified form of the link.

Similar letters indicate similar throughout the several views;

a indicates the ordinary T-rail.

1) indicates one of the brackets for supporting the detector-bar 0, each bracket having sides d d and connecting cross-pieces e and f. Each of the sides d dis provided with a lug 9, adapted to receive a bolt for clamping the parts bracket to the rail and for holding the retaining-strap h in position. The inner ends of these lugs g g are pointed and are adapted to be freed from ice or snow by the impact of .the link, as hereinafter described. Each of 'face of the cross-piece e of the bracket is beveled, as at j, in continuation of the guide 2', the beveled edgeforming an additional guide for holding the bar in alinement and extending from side to side of the bracket. The cross-piece f is provided with a flange Z0, adapted to rest on the base of the rail a, the flange also bearing a boss Z, adapted to hold a pin m, on which the link 11, oscillates. The outer end of the link is pivoted on a pin 0 on the detector-bar c, as shownin Fig. 1. The retaining-strap h is adapted to hold the link in proper alinement and guide the same in its movement from side to side of the bracket.

The apparatus is operated by the longitudinal thrust of the pipe 19 of the signal apparatus, adapted to be operated from the signal-tower in the usual manner, the pipe thrusting against a lug r on the detector-bar.

It is obvious that the detector-bar cannot be raised from its normal position in either direction when a car-wheel is standing above the same, as the wheel will prevent such movement, but when the car has passed over the bar it can be raised and by the fullstroke of the leverin the signal-tower passed through the extent of its movement.

Should ice or snow become lodged on the bracket or on the lugs thereon, the impact of the link as it swings from side to side against the sharp points of the lugs will break the ice, and consequently free the apparatus from the same.

Another feature of my invention is that I have provided a hood 8 over the ends of the bearings of the pins in the links, the hood being adapted to screen the bearings from the sand from the engine.

In Fig. 3 I have shown a modification of the link in which the bearings for the pins are closed at one end, a chamber tbeing provided in each bearing adapted to act as an oil-chamber, the perforation u aifording access to the oil-chamber. The perforation or oil-hole u is protected froms and by a hood w, acting, as hereinbefore referred to, to protect both the bearing and the oil-hole from sand or other foreign material.

I am aware that changes may be made in the arrangement of parts and in the construction of the same without departing from the spirit of my invention, and I therefore do not restrict myself to the details shown.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s-

1. A detector-bar adapted to be supported 011 a rail, a link pivoted on said bar and means for holding the link against outward thrust.

2. A detector-bar adapted to be supported on a rail, a link pivoted on said bar and a strap adapted to hold the link against outward thrust.

3. A detector-bar adapted to be supported on a rail by brackets, each bracket being provided with a guideway, and means for oscillating and retaining the bar in alinemcnt with the rail comprising alink pivoted on said bar and adapted to hold the bar against the inner surface of the guideway.

4. In a detector-bar adapted to oscillate along the rail, a link pivoted on said bar and supported in an open bracket, and a strap for holding the link against outward thrust.

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5. A detector-bar adapted to oscillate along the rail, the bar being pivoted on a link supported in a bracket, the bearings of the link being protected by hoods projecting from the link over said bearings.

6. A detector-bar adapted to oscillate along the rail, the bar being pivoted on a link supported in a bracket, the bearings of the link being provided with oil-chambers and protected by hoods projecting from the link over said bearings.

7 In a detector-bar adapted to oscillate along the rail, a link pivoted on said bar and supported in a bracket provided with lugs each having a point against which the link is adapted to strike.

8. A detector-bar adapted to be supported on a rail, a link pivoted on said bar and supported in a bracket, the bearings of the link being in a chamber closed at one end.

9. A detector-bar adapted to be supported on a rail, a link pivoted on said bar and supported in a bracket, the bearings of the link being in a chamber closed at one end and provided with an oil-hole and means for protecting the same.

In testimony whereof I have hereunto subscribed my name in the presence of two subscribing witnesses.

JAMES T. IIAMBAY.

Witnesses:

SEABURY C. MASTICK, MAY S. AVERY. 

